See the final price after discount and sales tax — with effective savings.

Estimate your monthly electricity bill from appliance usage.

Calculate fuel costs for trips and estimate your monthly/yearly gas budget.

Calculate tips at any percentage and split the bill evenly between friends.

See your age in months, weeks, days, hours, and heartbeats.

Estimate take-home pay from app sales after Apple or Google commission and taxes.

Calculate the volume of an inflated spherical balloon in liters from its radius.

Convert a total number of bits to terabytes.

Estimate the number of bricks needed for a wall, including mortar joints and waste.

Calculate how long it takes to pop a sheet of bubble wrap at a given rate.

Calculate total candle burn time in hours from height and burn rate.

Convert a cat's age in years to its equivalent human age.

Estimate the internal pressure of a champagne bottle at a given temperature.

Estimate the total weight of a cumulus cloud from its volume and water density.

See the true cost of your daily coffee habit.

Estimate the spread radius of a coffee spill on an absorbent surface.

Calculate the probability of a heads or tails streak of a given length.

Estimate cubic yards of concrete and 80lb bags needed for round columns.

Estimate cubic yards of concrete and 80lb bags needed for rectangular footings.

Estimate cubic yards of concrete and 80lb bags needed for a slab.

Estimate deck boards and linear feet needed from deck size and board width.

Show the recommended number of riffle shuffles to randomize a 52-card deck.

Convert a dog's age in years to its equivalent human age.

Useful work from a gas tank versus an EV battery after efficiency losses.