MCP Integration · Free
Stop copy-pasting numbers. Ask your AI assistant directly.
Every free calculator on this site, 111 of them and growing, is connected to Claude and other MCP-compatible AI assistants through a public Model Context Protocol (MCP) server. Connect once, with one click or a paste, and every calculation you would otherwise do by hand on a calculator page can be run directly inside your AI assistant instead, using your own numbers, with no account and no API key.
Why this exists
A calculator page answers one question, with numbers you type in by hand. That is fine the first time. It gets tedious the fifth time, when you are running the same LTV:CAC or CAC payback math with slightly different assumptions in a planning conversation, or when you are already mid-conversation with an AI assistant about your growth plan and have to stop, open a new tab, find the right calculator, and type the same numbers in again.
MCP (Model Context Protocol) removes that step. It is an open standard, not something specific to this site, that lets an AI assistant call external tools directly during a conversation. Once your assistant is connected to this server, asking it a question like “what is my CAC payback period if I spend $40,000 a month and close 12 customers” runs the actual calculator on this site in the background and returns the real result, inline, without you leaving the conversation.
Connect in one step
Pick your AI assistant below. Claude, Cursor, and VS Code all connect with a single click or a paste, no manual JSON editing required unless you want it.
What to ask once connected
You do not need to know a tool’s exact name. Describe what you want in plain language and your assistant will pick the right calculator. A few examples:
- “What is my ROAS if I spent $50,000 and made $250,000 in revenue at 60% margin?”
- “My MRR is $80,000, project my ARR a year out if I add $6,000 in net-new MRR every month.”
- “Is a CRM worth it for a 15-person sales team closing 24 deals a year at $180,000 average deal size?”
- “Run the Rule of 40 for a company growing 35% year over year with a 12% profit margin.”
Every tool response includes a link back to the full interactive calculator on this site, so you can dig deeper, adjust assumptions visually, or share the link with a colleague.
All 111 connected calculators
Every tool here maps to a real, interactive calculator on this site. Search by name or what it does, filter by category, or click any name to open the full version directly.
Showing 111 of 111 calculators
ROAS & Break-even ROAS Calculator
Calculate ROAS, ACOS, break-even ROAS, and profit from ad revenue, ad spend, and gross margin.
LTV : CAC Ratio Calculator
Calculate customer LTV, CAC, the LTV:CAC ratio, and CAC payback period.
Ad Spend Waste Calculator
Estimate how much monthly ad budget leaks to fraud and tracking/attribution waste.
CRM ROI Calculator
Weigh a CRM subscription and implementation cost against the win-rate lift it buys.
MQL Calculator
Turn traffic and conversion rates into MQL volume, cost per lead, and cost per MQL.
ARR Multiple Calculator
Apply conservative, market, premium, and custom ARR multiples to see the valuation range they imply.
MRR to ARR Calculator
Annualize MRR into ARR, with an optional 12-month projection from expected net-new monthly revenue.
SaaS Magic Number Calculator
Measure how efficiently sales and marketing spend turns into new ARR.
CPL / CPA Calculator
Calculate cost per lead, expected customers, and cost per acquisition from spend, leads, and a lead-to-customer conversion rate.
ROAS to MER Converter
Compare a platform-reported ROAS against your true blended Marketing Efficiency Ratio (MER) to see how much pixels over-claim.
PPC Click Volume Predictor
Predict monthly clicks, conversions, and effective CPA from budget, CPC, and conversion rate, and check whether volume clears the ~50 weekly conversions platforms need to exit learning.
Ad Creative Fatigue Forecaster
Forecast how many days until an ad audience hits its fatigue frequency ceiling, and the date to have fresh creative ready.
CPA to CAC Scalability Matrix
Project how CPA/CAC inflates as you double and triple ad spend, given a per-doubling decay rate.
Retargeting Pool Size Estimator
Estimate the addressable retargeting pool from monthly visitors, window, and match rate, plus the budget needed to hit a target weekly frequency.
Performance Marketing Margin Protector
Calculate the break-even and maximum CPA that protect a target profit margin, and check current CPA against that ceiling.
Impression Share Opportunity Matrix
Estimate missed conversions and revenue from operating below 100% impression share on a search campaign.
Cross-Channel Ad Spend Allocator
Suggest a starting Google/Meta/LinkedIn budget split based on total budget and average contract value.
LinkedIn Ad Cost Threshold Calculator
Calculate implied CAC from LinkedIn CPC, landing conversion, and close rate, and check it against the maximum CAC a contract can fund.
Seasonal Ad CPM Predictor
Project CPM and reach impact for a given season (back-to-school, Black Friday, Q4, January) from a baseline CPM.
Micro-Budget Ad Feasibility Checker
Check whether a small daily ad budget can generate the ~50 weekly conversions platforms typically need to exit the learning phase.
Google Search Impression Share Value Estimator
Estimate missed clicks, conversions, and revenue from operating below 100% search impression share.
Lookalike Audience Pool Calculator
Estimate the addressable pool from a lookalike percentage and market population, and grade seed audience quality.
Ad Frequency Risk Checker
Calculate average ad frequency from impressions and reach, and flag whether it is healthy, caution, or fatigue territory.
Landing Page vs. Ad Match Quality Auditor
Score message-match continuity between an ad and its landing page across five weighted criteria (headline, keyword, offer, CTA, visuals).
UTM Generator & Validation Helper
Generate a cleaned, encoded UTM-tagged URL from source, medium, campaign, term, and content, and flag common tagging errors.
Paid Search Intent Tier Grader
Grade a list of search keywords into transactional, commercial, or informational intent tiers, and flag the wasted-intent share.
Creative Testing Duration Forecaster
Forecast how many days an ad creative test needs to reach a sound sample size, from daily spend, expected CPA, variant count, and conversions needed per variant.
Post-iOS14 Blended Attribution Modeler
Compare summed platform-claimed revenue against actual backend revenue to quantify over-reporting and the true blended ROAS.
In-House vs Fractional CMO Calculator
Compare the loaded annual cost of a full-time CMO hire against a fractional CMO retainer, including the ramp-up cost before a full-time hire makes impact.
Growth Runway Extension Simulator
See how much cash runway a cut to gross burn buys you, given current cash, burn, and revenue.
Total Addressable Market (TAM/SAM/SOM) Estimator
Build a bottom-up TAM, SAM, and SOM from company counts, reachable share, ACV, and obtainable market share.
Brand vs Performance Budget Allocator
Split a marketing budget between brand and performance spend based on company stage, using the Binet & Field long/short research as a directional guide.
Product-Market Fit Scoring Grader
Score product-market fit signals (the "very disappointed" test, retention, organic pull, NPS) into a weighted 0-100 PMF score and scale-readiness verdict.
Customer Expansion Revenue Matrix
Compound net monthly expansion revenue (upsell + cross-sell minus contraction) forward 1, 2, and 3 years from current ARR, with no new logos.
Growth Strategy Prioritization Tool (ICE Scoring)
Rank growth ideas by ICE score (Impact, Confidence, Ease averaged, each scored 1-10) to decide what to run next.
Pricing Elasticity Sandbox
Model how a price change affects volume, revenue, and gross profit given a price elasticity of demand.
Burn Rate Optimization Forecaster
Simulate month by month, at a given revenue growth rate and gross margin, how many months until gross profit covers fixed burn, and the cash needed to bridge the gap.
Marketing Agency Pitch Bullshit Detector
Score an agency pitch on whether it's grounded in real, verifiable outcomes or dressed-up vanity metrics and vague promises.
Competitor Ad Spend Benchmarker
Estimate a competitor\'s ad spend from share-of-voice data, assuming spend maps roughly to share of voice within the same auction.
LTV Growth Multiplier Simulator
Show how much gross-margin LTV grows when monthly churn improves, using LTV = ARPA x gross margin / monthly churn.
Channel Saturation Estimator
Project how many months until a channel\'s compounding CPA inflation pushes it past your max viable CPA.
Product-Led Growth Feasibility Grader
Score whether a product can support a self-serve, product-led growth motion, versus a hybrid or sales-led approach, across 5 weighted criteria.
Growth Team Hiring Sequence Planner
Recommend the right growth/marketing hiring sequence for your ARR band, from founder-led at pre-$1M to a full leadership team at $10M+.
Bootstrapped vs Venture-Backed Scaler Modeler
Compare a founder\'s take-home from a bootstrapped exit against a venture-backed, diluted exit, and find the break-even exit value where raising starts to pay off.
Internationalization Market Prioritization Grid
Score a candidate international market on size, localization ease, competitive whitespace, regulatory ease, and payments/GTM readiness to decide whether to prioritize, plan, or deprioritize it.
Annual Growth Goal Back-Calculator
Work backwards from an annual revenue goal, through ACV and close rates, to the traffic and leads needed per month to hit it.
Organic Traffic Value Monetizer
Value organic search traffic in ad-equivalent spend (clicks x CPC), and split out the non-branded portion that represents genuine, defensible SEO value.
Strategic Pivot Risk Grader
Grade the risk of pivoting upmarket to enterprise across sales motion, pricing/packaging, cash buffer, product compliance, and team experience.
Conversion Funnel Calculator
Calculate conversion rate and the traffic needed to hit a target number of conversions at that rate.
A/B Test Significance Calculator
Run a two-proportion z-test on an A/B test to get relative uplift and statistical confidence.
Page Speed Leak Calculator
Estimate the extra conversions and revenue recovered by cutting page load time, using an industry-average per-second conversion penalty.
Above-the-Fold Messaging Clarity Grader
Score a hero section\'s five-second clarity across five weighted checks (what you do, outcome, CTA, jargon, subhead) into a 0-100 clarity verdict.
Micro-Conversion Value Modeler
Back into a proxy dollar value for an early-funnel micro-conversion from the value of a won customer and the micro-to-customer conversion rate.
Cart Abandonment Calculator
Calculate revenue lost to cart abandonment and how much a recovery flow could win back.
CTA Visual Hierarchy Tester
Score a call-to-action button\'s visibility using its real WCAG contrast ratio against the background plus size and placement.
Typography Legibility Grader
Score body copy legibility on font size, line height, and line length against ideal bands, into a 0-100 score.
Mobile Checkout Friction Tester
Score a mobile checkout flow\'s friction from step count, guest checkout, wallet pay, autofill, and mobile input types into a 0-100 score.
Social Proof Strength Auditor
Score the persuasive strength of testimonials and proof elements across six weighted criteria into a 0-100 credibility score.
Value Proposition Strength Grader
Score a value proposition on clarity, specificity, differentiation, outcome focus, and pain relevance into a 0-100 score.
Lead Magnet Copy Grader
Score a lead magnet\'s perceived opt-in value across five weighted criteria into a 0-100 score.
Exit-Intent Timing Optimizer
Estimate the best time to fire a timed exit-intent popup, based on average session duration, pages per session, and engaged-visitor share.
Friction Point Identifier
Count how many of 8 common conversion-flow friction points are present and turn that into a flow health score.
Product Tour Effectiveness Grader
Model a multi-step product tour funnel from start through completion to activation, and flag the biggest drop-off step.
Pricing Page Architecture Grader
Score a pricing page\'s choice architecture across six weighted criteria (tiers, highlighting, anchoring, comparison, CTA, billing toggle) into a 0-100 score.
Trust Badge ROI Estimator
Estimate the monthly and annual revenue lift from adding trust/security badges near a conversion point.
UX Pattern Anti-Pattern Checker
Count how many of 8 known dark patterns are present in a user experience and turn that into an integrity score.
Video Conversion Modeler
Model the pipeline and revenue a video drives from views, completion rate, and post-completion conversion rate.
Lead Quality & Intent Evaluator
Split signups into corporate-email vs personal-email intent segments, apply different close rates to each, and score overall lead quality.
Thank-You Page Revenue Maximizer
Estimate the extra revenue from adding a secondary action (referral, upsell, booking, or community) on a thank-you page, using typical take rates.
Sales Pipeline Leak Evaluator
Run leads through the Lead → MQL → SQL → Opportunity → Win funnel and flag the weakest converting stage.
Pipeline Velocity Equation Engine
Calculate sales velocity, the revenue your pipeline generates per day, from open opportunities, win rate, deal value, and cycle length.
Lead Routing Delay Cost Calculator
Estimate the deals and revenue lost each month from slow lead response times, modeling how conversion decays with response delay.
CRM Cleanup ROI Calculator
Quantify the rep hours and revenue lost to dirty CRM data each year, and the selling capacity a cleanup would free up.
SDR Capacity & Inbound Quota Planner
Work out how much inbound volume an SDR team can properly cover per month, and how many reps you would need to fully cover current inbound.
MQL-to-Sales Disconnect Analyzer
Measure the marketing spend wasted on MQLs that sales rejects, based on the accept rate between the two teams.
Lead Scoring Logic Architect
Score a lead on weighted fit and behavior criteria and get a routing recommendation (route to sales, nurture, or disqualify).
Lead Grading Calculator
Turn firmographic fit criteria into an A–F lead grade, distinct from behavioral lead scoring.
GTM Tracking Audit Scorecard
Score your Google Tag Manager container health across eight weighted dimensions covering tag hygiene, consent, and reconciliation.
Form Field Friction Cost Calculator
Estimate the extra leads and pipeline value unlocked by trimming form fields, using a per-field conversion recovery rate.
Tech Stack Duplication Inspector
Estimate the monthly and annual SaaS spend wasted on overlapping tools, from total spend, tool count, and estimated feature overlap.
Sales Cycle Length Forecaster
Project total deal cycle length by adding stakeholder count and compliance/procurement gates to a base single-buyer cycle.
No-Show Rate Revenue Restorer
Calculate the revenue lost each month to demo no-shows, and how much would be recovered by cutting the no-show rate by 5 or 10 points.
Inbound Call Center Routing Auditor
Estimate the customers and ARR put at risk each year by slow support routing and SLA breaches.
AE/SDR Hand-off Friction Calculator
Quantify meetings and revenue lost when the SDR-to-AE hand-off is inconsistent, from scheduling, notes, CRM completeness, and SLA follow-up quality.
RevOps Maturity Benchmarker
Score RevOps maturity across five dimensions (systems, attribution, governance, forecasting, automation) on a 1-4 scale and identify the weakest area.
Cross-Sell Opportunity Estimator
Estimate the expansion ARR available from cross-selling a second product into your existing single-product customer base.
Data Enrichment Value Predictor
Compare the cost of manual rep research against an enrichment tool subscription, and calculate the net monthly savings and ROI.
Renewals Pipeline Health Grader
Grade an account renewal on weighted 90-day signals (adoption, sponsor strength, support sentiment, realised value) and quantify ARR at risk.
Sales Commission Tier Modeler
Model a rep\'s commission payout under a base-plus-accelerator plan, and check it against gross margin to catch plans that outrun profitability.
Historical Data Drift Estimator
Estimate how much of a contact database has gone stale since it was last cleansed, using an annual B2B data decay rate.
Contract Redline Duration Predictor
Predict how long legal redlines will take, whether the deal will slip past quarter-end, and the revenue at risk.
Net Revenue Retention Forecaster
Project ARR over three years from net revenue retention (gross churn and expansion), compounded on the existing base with no new customers.
Rule of 40 Sandbox
Add YoY revenue growth and profit margin to see if a SaaS business clears the Rule of 40 benchmark.
CAC Payback Period Matrix
Calculate months to recover fully-loaded CAC on a gross-margin basis versus a raw-revenue basis.
SaaS Churn Cohort Visualizer
Project how a customer cohort decays over time under a monthly churn rate, and the implied average customer lifespan.
ACV Weight Planner
Break ARR down by SMB versus enterprise segments to see revenue concentration and per-customer averages.
Expansion Revenue Impact Simulator
Estimate expansion ARR from an upsell offer and the new-logo CAC it would take to buy the same growth.
Freemium to Paid Pipeline Modeler
Model monthly and annual new ARR from a freemium funnel, and the ARR still lagging in the upgrade pipeline.
SaaS Quick Ratio Engine
Divide MRR gained (new + expansion) by MRR lost (contraction + churn) to measure growth durability.
Gross Margin Impact Calculator
Calculate gross profit and gross margin from revenue, infrastructure cost, and support/delivery cost.
Seat Utilization Risk Assessor
Estimate renewal ARR at risk from low seat utilization on a subscription contract.
Enterprise Contract Discount Evaluator
Show how much lifetime profit an enterprise discount actually gives away, since cost-to-serve does not drop with price.
MRR Bridge Planner
Bridge starting MRR to ending MRR across new, expansion, resurrected, contraction, and churned movements.
LTV : CAC Ratio Health Grader
Grade the LTV:CAC ratio on a gross-margin basis against health bands, from losing money to under-investing.
SaaS Valuation Multiple Predictor
Estimate a directional ARR multiple and enterprise value range from growth, net revenue retention, and gross margin.
Product Usage Frequency Grader
Grade product stickiness from DAU/MAU into bands from idle tab to daily utility.
B2B Implementation Delay Cost Calculator
Estimate revenue delayed each year by a slow onboarding gap between signature and go-live, and what halving it recovers.
Customer Success Capacity Planner
Compare CSM account load against a healthy book size to see capacity utilization and the hiring gap.
Deferred Revenue Amortization Planner
Straight-line an upfront payment across the contract term to see revenue recognized to date versus the remaining deferred-revenue liability.
Net Promoter Score Impact Modeler
Turn promoter and detractor percentages into NPS, net advocacy, and the organic referral pipeline promoters generate.
Marketing Budget Calculator
Size an annual and monthly marketing budget as a percentage of revenue, based on a growth posture (maintain, grow, or aggressive) or a custom override.
FAQ
Is this free?
Yes. There is no account, no API key, and no rate limit tied to this site. The only cost, if any, is whatever your AI assistant itself charges you for usage, this integration adds nothing on top of that.
What is MCP?
Model Context Protocol is an open standard that lets an AI assistant call external tools directly during a conversation, instead of you copying numbers back and forth. Once connected, asking "what is my LTV:CAC ratio" runs the real calculator on this site and returns the actual result inline in your chat.
Which AI assistants support this?
Claude supports it directly through Settings → Connectors, just paste the URL, no config file. Cursor and VS Code connect with a single click. Other MCP-compatible tools generally support the same URL-based connection. Broad consumer support in apps like the standard ChatGPT interface varies and is rolling out unevenly across providers, check your specific app's settings for "MCP servers," "connectors," or "custom tools."
Is my data sent anywhere or stored?
No. Every tool here runs the same pure arithmetic as the calculator page itself, the numbers you provide are used only to compute the result, then discarded. Nothing is logged, stored, or associated with you.
Can I request a calculator that is not listed?
Yes, this list grows over time. If there is a specific calculator you want available as an MCP tool, book a free 45-minute consultation and mention it, or check back, new tools are added regularly.
Want a straight read on what your numbers actually mean?
A calculator gives you a number. A free 45-minute consultation tells you what it means for your business and what to do next.
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