Free online calculators,
instant results.

Scientific Calculator

Trigonometry, logarithms, powers, roots, memory and history, free in your browser.

NEW

Santa Speed Calculator

How many houses per second and how fast the sleigh must fly to deliver every gift in one night.

LIVE

Commonwealth Games 2026 Tracker

Live medal table for Glasgow 2026 — sort the 74 nations by gold, silver and bronze.

PRO

Mortgage Calculator

Monthly payment, animated amortization chart, 28/36 affordability check and extra payment simulator.

LIVE

World Cup 2026 Players Countdown

From 1,248 players to a single champion — how many are left at each round, live.

✦

Hail Mary Interstellar Travel

How long to reach Tau Ceti and Erid at different speeds, with an animated ship and warp.

PRO

Coffee Composition

Espresso, milk and foam poured layer by layer, in the real proportions of every coffee drink.

PRO

Cocktail Recipes

Six classic cocktails poured layer by layer, with exact amounts and the story behind each one.

Number Line

Add and subtract within 20 — a frog hops each step so kids can count along.

PRO

Opportunity Cost of Military Spending

Translate a public spending figure into schools, hospitals, teachers, homes or scholarships.

PRO

3D Dice Roller

Roll d4 to d100 as real 3D polyhedra that tumble and settle, with three visual styles.

PRO

Split the Bill by Dish

Split a restaurant bill by what each person ate, with tax, tip and a live per-person total.

PRO

Interactive Pasta Recipe

Classic pasta recipes step by step, with servings that scale and a built-in cooking timer.

PRO

Compound Interest Simulator

An animated chart of your savings growing year by year, split into contributions and interest.