Suggest a tool

Tell us what tool you wish existed. We build one every week from real user requests.

Decide faster.

Productivity & Lifestyle

Reddit-sourced calculators and decision helpers for everyday life — Eisenhower matrix, weighted decision matrix, standup picker, chore wheel, coffee-break cost, email-response time impact, raise calculator, pizza topping voter, dice and card roller, lottery odds, pet age converter, walking steps, statistics, percent change, triangle solver, 3D volume, GPA, APR/APY.

36 tools available

Sub-categories

Eisenhower Matrix Sorter

Sort tasks into Do / Schedule / Delegate / Drop quadrants instantly.

Open tool

Weighted Decision Matrix

Pick between 2–6 options using a weighted score across your criteria.

Open tool

Standup Meeting Picker

Randomly pick who goes first in your standup or icebreaker.

Open tool

Family Chore Wheel

Spin a wheel to assign weekly chores fairly across the family.

Open tool

Coffee & Snack Break Cost Calculator

See how much your daily coffee / snack break actually costs per year.

Open tool

Email Response Time Estimator

Estimate the impact of slower email reply times on your business or team.

Open tool

Raise / Salary Increase Calculator

See the true after-tax impact of a raise, and compare percent vs flat dollar offers.

Open tool

Pizza Topping Voter

Pick the right pizza order for the whole group with one tap.

Open tool

Dice Roller (d4 / d6 / d8 / d20)

Roll any polyhedral die or a batch of dice, with totals and history.

Open tool

Random Card Picker

Draw random cards from a standard 52-card deck (with or without jokers).

Open tool

Lottery Odds Calculator

See your real odds of winning Powerball, Mega Millions, EuroMillions, and more.

Open tool

Pet Age Converter

Convert a pet's age to human years for dogs, cats, rabbits, and hamsters.

Open tool

Walking Steps & Calorie Calculator

See how many steps you took in miles and the calories you burned.

Open tool

Statistics Calculator

Compute mean, median, mode, range, variance, and standard deviation for any dataset.

Open tool

Percentage Change Calculator

See the percent change between any two numbers (with direction).

Open tool

Triangle Calculator (Sides / Area / Angles)

Solve any triangle given 3 known sides or 2 sides + 1 angle (Law of Cosines / Sines).

Open tool

3D Volume & Surface Area Calculator

Compute volume and surface area for spheres, cubes, cylinders, cones, and pyramids.

Open tool

GPA Calculator (Weighted & Unweighted)

Compute weighted and unweighted GPA on a 4.0 / 4.5 / 5.0 scale.

Open tool

APR ↔ APY Converter

Convert between APR and APY for any compounding frequency.

Open tool

Concert Total Cost

Total cost of a concert night including fees and travel.

Open tool

Pet Food Portion

How many cups of kibble per day for your dog or cat?

Open tool

Moving Truck Size

Right-sized moving truck or container for your move.

Open tool

Roommate Rent Split

Split rent fairly by room size and amenities.

Open tool

Cleaning Schedule & Cost

How many minutes per week to keep a tidy home — and what a pro would charge.

Open tool

Party Drinks to BAC

Pace your drinks at a party to stay under a target peak BAC.

Open tool

Commute Cost Comparison

Annual cost of car vs transit vs rideshare for your commute.

Open tool

Pool / Tub Fill Time

How long to fill a pool, tub, or tank — and the water bill.

Open tool

Credit Card Payoff Time

How long until your credit-card balance is gone, and how much it costs.

Open tool

Betting Odds & Vig

Decode the bookmaker's spread and find the real implied probability.

Open tool

Prescription Cost

Monthly + annual cost of a prescription.

Open tool

Daycare vs Nanny vs Stay-at-Home ROI

Determine the highest-net-income childcare option for a working parent.

Open tool

Meal Macro Balance Score

Score a meal's macro balance and overall nutrition.

Open tool

Independent Film Budget

Estimate the production + post budget for a small film shoot.

Open tool

Passport Power Ranker

Compare two passports by visa-free + visa-on-arrival + eTA count.

Open tool

First Date Budget Estimator

Estimate a realistic first-date budget by city and style.

Open tool

Meal Macro Balance Score

Score a meal's macro balance and overall nutrition.

Open tool

Browse another category