All tools
Free online calculators A-Z
Browse the full TotalNumbers calculator library as crawlable HTML links. The tools are grouped by category so you can move from a broad planning question to the exact calculator, collection, or guide that fits the decision.
- All calculator links are crawlable
- Search is optional
- No sign-up needed
Search calculators
Search the full TotalNumbers calculator library and open the tool that fits your planning question.
Topic hubs
Calculator subhubs
Start with a focused hub when your question spans several categories, such as home planning, business growth, developer utilities, car costs, or energy usage.
Subhub
Finance Calculators
Plan payments, savings goals, debt payoff, investment growth, retirement, inflation, and monthly budgets with connected finance calculators.
Subhub
Home Calculators
Estimate mortgage payments, affordability, closing costs, rent vs buy decisions, construction materials, and home energy costs.
Subhub
Business Calculators
Connect profit, pricing, SaaS metrics, ecommerce fees, marketing performance, and cash runway into practical planning estimates.
Subhub
Developer Tools
Use browser-only developer utilities for formatting, validating, converting, counting, previewing, and checking common web development and SEO values.
Subhub
Crypto Calculators
Estimate crypto ROI, fees, swaps, market cap, FDV, mining profitability, staking-style yield scenarios, leverage, liquidation distance, funding, and portfolio risk from your own inputs.
Subhub
Car Cost Calculators
Estimate car ownership cost, auto loan payments, fuel cost, commute cost, and related budget pressure before comparing vehicles.
Subhub
Energy Calculators
Estimate electricity usage, solar payback, EV charging, battery runtime, generator runtime, heating, cooling, laundry, water, and home energy costs.
Server-rendered library
All Calculators A-Z
These links are present in the HTML before any search or filter JavaScript runs. Open a category to scan its calculators, or jump to the category page for a focused hub.
222 calculators
Finance
Finance calculators help turn rates, payment schedules, debt payoff, savings targets, and wealth-building assumptions into numbers you can actually plan around.
17 calculatorsCategory page
Finance
Finance calculators help turn rates, payment schedules, debt payoff, savings targets, and wealth-building assumptions into numbers you can actually plan around.
Business
Business calculators make quick planning easier for founders, freelancers, operators, SaaS teams, and ecommerce sellers by connecting pricing, acquisition, retention, cash runway, recurring revenue, payback, and profit metrics.
17 calculatorsCategory page
Business
Business calculators make quick planning easier for founders, freelancers, operators, SaaS teams, and ecommerce sellers by connecting pricing, acquisition, retention, cash runway, recurring revenue, payback, and profit metrics.
Marketing
Marketing calculators help advertisers, growth teams, ecommerce operators, and publishers understand whether traffic, experiments, funnels, email campaigns, lead value, MER, spend, and revenue are moving in the right direction.
9 calculatorsCategory page
Marketing
Marketing calculators help advertisers, growth teams, ecommerce operators, and publishers understand whether traffic, experiments, funnels, email campaigns, lead value, MER, spend, and revenue are moving in the right direction.
Tech
Tech calculators translate infrastructure choices into practical estimates before you commit to an API, plan, server, media workflow, or local hardware setup.
10 calculatorsCategory page
Tech
Tech calculators translate infrastructure choices into practical estimates before you commit to an API, plan, server, media workflow, or local hardware setup.
Crypto
Crypto calculators help turn volatile prices, fees, swaps, mining rewards, electricity costs, coin conversions, market cap assumptions, leverage, liquidation, stop-loss, take-profit, drawdown, entries, exits, and position sizes into clearer planning scenarios. TotalNumbers does not fetch live crypto prices, mining data, or exchange data; use your own price, reward, supply, power, margin, and fee inputs.
26 calculatorsCategory page
Crypto
Crypto calculators help turn volatile prices, fees, swaps, mining rewards, electricity costs, coin conversions, market cap assumptions, leverage, liquidation, stop-loss, take-profit, drawdown, entries, exits, and position sizes into clearer planning scenarios. TotalNumbers does not fetch live crypto prices, mining data, or exchange data; use your own price, reward, supply, power, margin, and fee inputs.
Health
Health calculators can help you understand hydration, body composition, and simple health estimates, but they are informational only and not medical advice.
4 calculatorsCategory page
Health
Health calculators can help you understand hydration, body composition, and simple health estimates, but they are informational only and not medical advice.
Construction
Construction calculators help estimate material quantities before buying drywall, insulation, roofing, decking, fence supplies, mulch, wallpaper, lumber, concrete, tile, flooring, gravel, paint, or pool fill water.
15 calculatorsCategory page
Construction
Construction calculators help estimate material quantities before buying drywall, insulation, roofing, decking, fence supplies, mulch, wallpaper, lumber, concrete, tile, flooring, gravel, paint, or pool fill water.
Fitness
Fitness calculators help make nutrition, running pace, and training estimates easier to reason about while keeping the limits of estimates clear.
3 calculatorsCategory page
Fitness
Fitness calculators help make nutrition, running pace, and training estimates easier to reason about while keeping the limits of estimates clear.
Travel
Travel calculators help you estimate the full trip or transport cost before flights, fuel, hotels, meals, activities, and buffers start to blur together.
8 calculatorsCategory page
Travel
Travel calculators help you estimate the full trip or transport cost before flights, fuel, hotels, meals, activities, and buffers start to blur together.
Automotive
Automotive calculators make vehicle costs easier to compare by showing loan payments, ownership cost, insurance, depreciation, fuel, EV charging, maintenance, lease-versus-buy tradeoffs, road trip costs, tire sizing, refinancing, and used-car assumptions.
10 calculatorsCategory page
Automotive
Automotive calculators make vehicle costs easier to compare by showing loan payments, ownership cost, insurance, depreciation, fuel, EV charging, maintenance, lease-versus-buy tradeoffs, road trip costs, tire sizing, refinancing, and used-car assumptions.
Real Estate
Real estate calculators help compare housing costs across renting, buying, financing, refinancing, taxes, insurance, PMI, closing cash, and long-term ownership tradeoffs.
13 calculatorsCategory page
Real Estate
Real estate calculators help compare housing costs across renting, buying, financing, refinancing, taxes, insurance, PMI, closing cash, and long-term ownership tradeoffs.
Education
Education calculators help students and families turn grade, percentage, and planning questions into clear numbers.
7 calculatorsCategory page
Education
Education calculators help students and families turn grade, percentage, and planning questions into clear numbers.
Math
Math calculators help with practical school, work, and everyday number problems, from fractions and ratios to statistics, unit conversion, geometry, density, speed, prime factors, modulo arithmetic, scientific notation, and quadratic equations.
16 calculatorsCategory page
Math
Math calculators help with practical school, work, and everyday number problems, from fractions and ratios to statistics, unit conversion, geometry, density, speed, prime factors, modulo arithmetic, scientific notation, and quadratic equations.
Developer Tools
Developer tools calculators are quick browser-only utilities for designers, builders, developers, SEOs, and content teams working with CSS, colors, URLs, JSON, CSV, regex, JWT inspection, text, metadata, Open Graph, robots.txt, schema markup, sitemaps, timestamps, cron schedules, media, and layout values.
37 calculatorsCategory page
Developer Tools
Developer tools calculators are quick browser-only utilities for designers, builders, developers, SEOs, and content teams working with CSS, colors, URLs, JSON, CSV, regex, JWT inspection, text, metadata, Open Graph, robots.txt, schema markup, sitemaps, timestamps, cron schedules, media, and layout values.
Lifestyle
Lifestyle calculators cover small everyday questions where a quick total makes the decision easier, from subscriptions to electricity costs.
8 calculatorsCategory page
Lifestyle
Lifestyle calculators cover small everyday questions where a quick total makes the decision easier, from subscriptions to electricity costs.
Energy
Energy calculators help turn everyday power, fuel, charging, heating, cooling, water, and utility assumptions into practical monthly or annual cost estimates.
12 calculatorsCategory page
Energy
Energy calculators help turn everyday power, fuel, charging, heating, cooling, water, and utility assumptions into practical monthly or annual cost estimates.
Date & Time
Date and time calculators help turn schedules into clear planning numbers, from days between dates and business-day counts to work hours, payroll hours, meeting windows, deadlines, countdowns, and age calculations.
10 calculatorsCategory page
Date & Time
Date and time calculators help turn schedules into clear planning numbers, from days between dates and business-day counts to work hours, payroll hours, meeting windows, deadlines, countdowns, and age calculations.
Planning collections
Collections connect related calculators into workflows for housing, budgeting, business, materials, and operations.
Helpful guides
Guides explain how to combine calculators and read the assumptions behind the numbers.
Calculator Library FAQ
What calculators are available on TotalNumbers?+
TotalNumbers includes free calculators for finance, business, marketing, tech, crypto, health, construction, travel, real estate, cars, education, developer utilities, and everyday planning.
Are TotalNumbers calculators free to use?+
Yes. The calculators are free to use in the browser and are designed for quick estimates, scenario planning, and transparent formulas.
How should I choose the right calculator?+
Start with the category or search box that matches your decision, then compare related calculators and guides when you need a broader planning view.