Every Calculator You Need
39 free online calculators for math, finance, health, conversions, and everyday utility — all in one place.
What calculators does Calcodo offer?
Calcodo offers 39 free online calculators across seven categories: finance (loan payment, tip, sales tax, VAT, ROI, mortgage), health (BMI, calorie, ideal weight with metric and imperial units), math, time and date (hours calculator, days until), converters, digital tools, and real estate.
Are the calculators free to use?
Yes, every calculator on Calcodo is completely free with no sign-up, no limits, and no hidden fees. All calculations run locally in your browser, so your numbers are never sent to or stored on our servers.
Do the calculators work with US units and currencies?
Yes. Health calculators accept pounds and feet/inches as well as kilograms and centimetres, finance calculators support US dollars, euros, and British pounds, and dedicated tools cover US sales tax by state and European VAT rates.
How accurate are the results?
Each calculator uses the standard published formula for its domain - the same amortization formula lenders use, the Mifflin-St Jeor equation for calories, and official VAT rates for the UK and EU. Results are computed with full floating-point precision and rounded for display.
Does Calcodo work on mobile?
Yes, Calcodo is designed mobile-first: every calculator, the search, and category navigation work on phones, tablets, and desktops, with calculators loading instantly and working offline once visited.