Developer Utilities

Small developer utilities that save a trip to a random website. Encode and decode Base64, explain a regex, build UTM links, generate QR codes and vCards, and more — the everyday helpers. Free in your browser, and available by API when you need them in a script.

Developer Utilities
Cross stitch floss estimator
calculate skeins by color
POST /hobby/craft-crossstitch-floss$0.002
Developer Utilities
Stitch gauge from swatch calculator
sts & rows per unit, free
POST /hobby/craft-knit-gauge-from-swatch$0.002
Developer Utilities
Quilt Batting Size Calculator for Shrinkage and Trimming
POST /hobby/craft-quilt-batting$0.002
Developer Utilities
Quilt block count calculator
blocks, rows and columns for a finished size
POST /hobby/craft-quilt-block-count$0.002
Developer Utilities
Bias binding yardage calculator
length and fabric square
POST /hobby/craft-sewing-bias-binding$0.002
Developer Utilities
Soap making water amount calculator
water from lye & concentration
POST /hobby/craft-soap-water$0.002
Developer Utilities
Candle Container Wax Weight Calculator
POST /hobby/craft-candle-container-wax$0.002
Developer Utilities
Diamond painting drill count calculator
drills per color and total
POST /hobby/craft-diamond-painting-drills$0.002
Developer Utilities
Boards for Panel Width Calculator
Plan a Glue-Up
POST /hobby/craft-panel-board-count$0.002
Developer Utilities
Bowling Average Calculator for League Standings and Handicap
POST /hobby/sport-bowling-average$0.002
Developer Utilities
Darts 501 score remaining calculator
subtract a visit, free
POST /hobby/sport-darts-501-remaining$0.002
Developer Utilities
Golf course handicap calculator
index to course handicap (slope & rating)
POST /hobby/sport-golf-course-handicap$0.002
Developer Utilities
Golf strokes received per hole calculator by stroke index
POST /hobby/sport-golf-strokes-received$0.002
Developer Utilities
Bicycle gear ratio calculator
chainring and sprocket teeth to gear ratio
POST /hobby/sport-bike-gear-ratio$0.002
Developer Utilities
Bike speed from gear and cadence calculator
road speed from RPM
POST /hobby/sport-bike-speed-from-cadence-gear$0.002
Developer Utilities
Calories burned from MET calculator
MET, body weight and duration
POST /hobby/sport-calories-met$0.002
Developer Utilities
Bouldering grade conversion calculator
V-scale ↔ Fontainebleau
POST /hobby/sport-climb-boulder-convert$0.002
Developer Utilities
Scuba Air Consumption at Depth Calculator
SAC, ATA and Tank Time
POST /hobby/sport-dive-air-consumption$0.002
Developer Utilities
Tobler Hiking Speed Calculator for Uphill and Downhill Slopes
POST /hobby/sport-hike-tobler$0.002
Developer Utilities
Count letters only
ignore spaces, digits and punctuation
POST /str/char-count-letters-only$0.002
Developer Utilities
Count lowercase letters in text
free online counter
POST /str/char-count-lowercase$0.002
Developer Utilities
Count consonants in text
free consonant counter
POST /str/count-consonants$0.002
Developer Utilities
Count hashtags
tally #tags in text for social media planning
POST /str/count-hashtags$0.002
Developer Utilities
Count tab characters
detect tabs in text free online
POST /str/count-tabs$0.002
Developer Utilities
Count occurrences of a word
whole-word text counter
POST /str/count-word-occurrences$0.002
Developer Utilities
Estimate page count from text
words per page for manuscripts and essays
POST /str/estimate-page-count$0.002
Developer Utilities
Find longest line
character length of the longest line, free
POST /str/longest-line$0.002
Developer Utilities
Find the shortest word in text and its length
POST /str/shortest-word$0.002
Developer Utilities
Character bigram frequency counter
adjacent pair counts in text
POST /str/char-bigram-frequency$0.002
Developer Utilities
Flesch Reading Ease score calculator for English text
POST /str/flesch-reading-ease$0.002
Developer Utilities
Convert to HTTP-Header-Case
format header field names
POST /str/header-case$0.002
Developer Utilities
Most common word finder
top word and count in any text, free
POST /str/most-common-word$0.002
Developer Utilities
Get nth word
extract the word at a position from text free
POST /str/nth-word$0.002
Developer Utilities
SMOG readability index calculator
estimate reading grade
POST /str/smog-index$0.002
Developer Utilities
Swap case converter
flip upper and lower letters, free
POST /str/swap-case$0.002
Developer Utilities
Type-Token Ratio Calculator for Lexical Diversity
POST /str/type-token-ratio$0.002
Developer Utilities
Count word frequency
rank words most to least free
POST /str/word-frequency$0.002
Developer Utilities
Detect text case style
camelCase, snake_case, kebab-case and more
POST /str/detect-case$0.002
Developer Utilities
Convert to flatcase
remove separators, lowercase into one string, free
POST /str/flat-case$0.002
Developer Utilities
MLA title case converter
capitalize titles by MLA rules
POST /str/mla-title-case$0.002
Developer Utilities
Remove control characters
strip non-printing chars, keep spaces
POST /str/remove-control-chars$0.002
Developer Utilities
Remove letters from text
keep numbers, punctuation and symbols
POST /str/remove-letters$0.002
Developer Utilities
Remove punctuation from text online
POST /str/remove-punctuation$0.002
Developer Utilities
Split camelCase into words
PascalCase and camelCase to readable phrases
POST /str/split-camel-case$0.002
Developer Utilities
Convert tabs to spaces
replace tab characters with a chosen space width
POST /str/tabs-to-spaces$0.002
Developer Utilities
Lowercase the first letter of text online
POST /str/uncapitalize-first$0.002
Developer Utilities
Normalize ellipsis characters and three periods
POST /str/normalize-ellipsis$0.002
Developer Utilities
Remove ANSI escape codes from terminal text and logs
POST /str/remove-ansi$0.002
Developer Utilities
Remove Unicode combining marks from text
POST /str/remove-diacritic-marks$0.002
Developer Utilities
Remove emoji from text
strip pictographs and symbols for plain text, free
POST /str/remove-emoji$0.002
Developer Utilities
Remove first line from text
drop headers and titles, free
POST /str/remove-first-line$0.002
Developer Utilities
Remove lines matching regex
filter text online
POST /str/remove-lines-matching$0.002
Developer Utilities
Sort characters in text
order letters and symbols online
POST /str/sort-characters$0.002
Developer Utilities
Sort lines by length
shortest to longest online
POST /str/sort-lines-length$0.002
Developer Utilities
Strip surrounding quotes
remove wrapping quotes from text free
POST /str/strip-surrounding-quotes$0.002
Developer Utilities
Center text in a chosen width
pad every line with spaces
POST /str/center-text$0.002
Developer Utilities
Indent lines by spaces
add leading spaces to every line, free
POST /str/indent-lines$0.002
Developer Utilities
Insert Text at a Position
Add a String at an Exact Character Index
POST /str/insert-at-position$0.002
Developer Utilities
Pad string center
center text in a fixed-width field, free
POST /str/pad-center$0.002
Developer Utilities
Add prefix to each line
prepend text, comment code, free online
POST /str/prefix-lines$0.002