CalcChef tool collection
Everyday Tools
Solve small, useful tasks quickly with calculators and helpers for home, travel, games, and everyday decisions.
Start with these tools
Gift Wrapping Calculator
Wrapping paper sheet size and area, ribbon length and tape count for box or cylinder gifts, with a check that each sheet fits the roll width.
Laundry Load Size Estimator
Estimate how large your laundry load will be based on the number of people and how often you do laundry. Get a recommended washer capacity and visual load gauge.
Random Number Generator
Random number generator: draw 1 to 10,000 numbers between a minimum and maximum you set, as whole numbers or decimals, with or without repeats, sorted or not.
Fuel Cost Calculator
Fuel cost calculator for a trip: enter distance, fuel economy in mpg (US or imperial), L/100 km or km/L and the fuel price to get the total cost and fuel used.
All Everyday Tools
39 free browser-based tools
Angel Number Calculator
Numerology for fun: add the digits of a birth date, reduce to one digit (keeping 11, 22, 33 and 44) and see it as an angel number such as 555 or 1111.
Bin Packing Optimizer
Pack item sizes into bins of one capacity with First Fit, Best Fit, First Fit Decreasing or Best Fit Decreasing and compare the count with the lower bound.
Birth Chart Calculator
Sun sign, Moon phase, Chinese zodiac, life path number, birthstone and generation from a date of birth. Not a full chart: no rising sign or houses.
Browser Info
See what your browser tells websites: screen and window size in CSS pixels, pixel ratio, time zone, languages, processor count and user agent.
Coin Flipper
Flip 1 to 10 virtual coins for heads or tails, with a running tally. Each face comes from the browser's secure random source, so both sides are equally likely.
Dice Probability Calculator
Odds of an exact, at-least or at-most total on 1 to 100 dice from d4 to d20, of one or every die showing a value, or of a d20 with advantage.
Dice Roller
Dice roller for d4 to d100 and notation such as 2d6+3 or 4d6dl1 (drop lowest). Shows each die and the total, plus the minimum, maximum and average.
Dunk Calculator
Jump needed to touch a 7 to 10 ft rim, dunk (6 in over) and power dunk (10 in over) from your standing reach, or a reach estimated as 1.335 x height.
eDPI Calculator
Calculate eDPI from mouse DPI and sensitivity, and convert your sens between Valorant, CS2, Overwatch 2, Apex Legends, Fortnite and Call of Duty.
Fuel Cost Calculator
Fuel cost calculator for a trip: enter distance, fuel economy in mpg (US or imperial), L/100 km or km/L and the fuel price to get the total cost and fuel used.
Gift Wrapping Calculator
Wrapping paper sheet size and area, ribbon length and tape count for box or cylinder gifts, with a check that each sheet fits the roll width.
Gold Hallmark Identifier
Convert karat, fineness and gold percentage (18K = 750 = 75.0%), decode a typed stamp and find the pure gold in an item by weight.
Internet Ping Test
Time 5 HTTP requests from your browser to this site and see the median, min, max and jitter in ms. An HTTP round trip, not an ICMP ping.
Laundry Load Size Estimator
Estimate how large your laundry load will be based on the number of people and how often you do laundry. Get a recommended washer capacity and visual load gauge.
List Randomizer
Shuffle a list, pick winners or split it into near-equal groups with the browser's cryptographic random generator: one item per line, up to 10,000 lines.
Love Calculator
Two names in, a love percentage from 1 to 100 out, worked out only from the letters of the names. A game for fun that measures nothing about the two people.
Map Scale Calculator
Real distance from a map measurement and scale, the map distance for a real one, or the scale from both: at 1:50,000, 10 cm is 5 km.
Moving Box Count Estimator
Moving box counts by size from your rooms, room size, packing method and how much you own, plus the wardrobe boxes and dish packs to add.
Moving Truck Size Calculator
Find out what size moving truck you need, from a cargo van to a 26 ft truck, based on bedrooms and square footage, for furniture and boxes or boxes only.
Pet Age Calculator
Dog and cat age in human years from the AVMA chart: 15 at year 1, 24 at year 2, then 4 a year for a cat and 4 to 6 for a medium dog, up to 16.
Plant Spacing Calculator
Plants that fit a garden bed from its length, width and spacing: square grid, staggered grid (about 15% more) and edge-to-edge counts.
Plywood Sheet Layout Optimizer
Turn a plywood, MDF or OSB cut list into a sheet count, cutting diagrams, a cut sequence and cost, with kerf and mixed sheet sizes, by a heuristic.
Point Buy Calculator
Build D&D 5e ability scores with the standard 27-point buy. Raise each score from 8 to 15 and see its cost, modifier and the points you have left.
Pomodoro Timer
Pomodoro timer with 25-minute work, 5-minute short break and 15-minute long break sessions; set each from 1 to 180 minutes.
Privacy Policy Skeleton
Answer questions about your site or app to get a privacy policy template in Markdown or HTML, with optional GDPR, UK GDPR, CCPA and CalOPPA sections.
Random Number Generator
Random number generator: draw 1 to 10,000 numbers between a minimum and maximum you set, as whole numbers or decimals, with or without repeats, sorted or not.
Resume Builder
Fill in your details and print a one-column resume on A4 or US Letter paper, or save it as a PDF from the print dialog. Entries stay in this browser.
Rock Paper Scissors
Play rock paper scissors against a computer that picks at random, with a scoreboard, win rate and streaks. Every round is 1 in 3 to win, lose or draw.
Roman Numeral Converter
Convert Roman numerals to numbers and numbers to Roman numerals, from 1 to 3,999,999, with a step breakdown. Spellings such as IIII are refused.
Roof Pitch Angle Calculator
Roof pitch from rise and run or an angle: degrees, x:12 pitch and slope percent, with a slope class. A 6-in rise over a 12-in run is 26.57°.
Saturn Return Calculator
Find the month and year of your first, second and third Saturn return from your birth date alone, a month-level estimate that needs no birth time.
Screen Resolution
See your screen resolution in CSS pixels, device pixel ratio, estimated physical pixels, viewport size and color depth, as your browser reports them.
Seed Spacing Garden Planner
Plants per row, number of rows and total plants for a garden bed, from its length and width in feet and the row and in-row spacing on the seed packet.
Storage Unit Size Estimator
Storage unit size in sq ft from home size, extra rooms, large items and boxes, with an 85 to 120% range and the smallest standard unit that fits.
Tire Size Calculator
Tire size calculator: enter a size such as 225/45R17 to get sidewall height, overall diameter, circumference and revolutions per mile, or compare two sizes.
Tournament Bracket Generator
Single-elimination bracket for 4 to 128 teams with standard seeding and byes for the top seeds. Click winners through to the final, shuffle or print it.
Tournament Score Keeper
Round-robin or Swiss scoring for up to 32 teams: 3 points a win, 1 a draw, ranked by points, wins, point difference and points scored, with Buchholz in Swiss.
Trip Cost Splitter
Split group trip costs evenly or by percent shares: each person’s balance and the fewest payments to settle up. Individual expenses only add to the total.
Typing Speed Test
Typing speed test with 15, 30, 60 and 120 second runs. See gross and net words per minute (WPM), accuracy and uncorrected errors while you type; pasting is off.