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
Split a gift budget among recipients by priority
POST /life/gift-budget-split$0.002Developer Utilities
Convert pet age to human years
dog, cat & more, free
POST /life/pet-age-human-years$0.002Developer Utilities
Estimate time to finish a reading list
finish date per book
POST /life/reading-list-time-estimate$0.002Developer Utilities
Build exam study schedule
hours per day by subject difficulty
POST /life/study-schedule-build$0.002Developer Utilities
Assign wedding table seating
keep groups together, free
POST /life/wedding-guest-seating$0.002Developer Utilities
APA citation generator
format APA 7th edition citations free
POST /life/citation-apa-format$0.002Developer Utilities
Convert GPA to a 4.0 scale
linear or standard mapping
POST /life/gpa-to-4-scale-convert$0.002Developer Utilities
Compare text similarity
shingle overlap percentage
POST /life/plagiarism-shingle-compare$0.002Developer Utilities
Validate feature flag names
lowercase kebab or snake_case with prefix
POST /dev/feature-flag-name-validate$0.002Developer Utilities
Extract GraphQL query variable names and types
POST /dev/graphql-query-variables-extract$0.002Developer Utilities
HTTP method for a CRUD action
REST verb and status code
POST /dev/http-method-from-action-suggest$0.002Developer Utilities
Extract OpenAPI path parameters in template order
POST /dev/openapi-path-params-extract$0.002Developer Utilities
Trip carbon footprint calculator for car, train, plane, or bus
POST /life/carbon-footprint-travel-estimate$0.002Developer Utilities
MLA citation formatter
MLA 9th edition from author, title, year
POST /life/citation-mla-format$0.002Developer Utilities
Commute cost calculator
compare driving vs transit daily and monthly
POST /life/commute-cost-compare$0.002Developer Utilities
Check interview answer STAR structure
Situation Task Action Result
POST /life/interview-answer-star-check$0.002Developer Utilities
Resume length check
is your CV the right length for your experience?
POST /life/resume-length-check$0.002Developer Utilities
Salary negotiation range calculator
suggested ask above market rate
POST /life/salary-negotiation-range$0.002Developer Utilities
Pomodoro study session planner
work and break schedule free
POST /life/study-break-pomodoro$0.002Developer Utilities
Generate a Wedding Planning Countdown Checklist
POST /life/wedding-countdown-checklist$0.002Developer Utilities
Shorten a Git commit hash to any valid length
POST /dev/commit-hash-short-form$0.002Developer Utilities
Resolve configuration value precedence
POST /dev/config-precedence-resolve$0.002Developer Utilities
Calculate a deterministic feature rollout percentage bucket
POST /dev/feature-toggle-rollout-percent$0.002Developer Utilities
Git branch naming convention validator
match pattern and extract parts
POST /dev/git-branch-name-validate$0.002Developer Utilities
Idempotency key format check
length and URL-safe characters validated
POST /dev/idempotency-key-format-check$0.002Developer Utilities
Rank log level severity order
sort and compare levels
POST /dev/log-level-severity-rank$0.002Developer Utilities
Extract regex named capture groups
list (?<name>) groups from a pattern
POST /dev/regex-named-group-extract$0.002Developer Utilities
REST endpoint naming checker
plural nouns, lowercase, hyphens
POST /dev/rest-endpoint-naming-check$0.002Developer Utilities
Diff package.json dependencies
added, removed, version changes
POST /dev/semantic-diff-package-json$0.002Developer Utilities
Derive a URL slug from a Git branch name
POST /dev/slug-from-git-branch$0.002Developer Utilities
Parse common log timestamp formats
ISO 8601, syslog and Apache to ISO
POST /dev/timestamp-log-parse$0.002Developer Utilities
Webhook delivery retry schedule
fixed, linear, exponential backoff delays
POST /dev/webhook-retry-schedule-build$0.002Developer Utilities
Detect API versioning scheme from URL
path, query, or header-implied
POST /dev/api-versioning-scheme-detect$0.002Developer Utilities
Debt snowball vs avalanche order
free payoff priority calculator
POST /fin/debt-snowball-order$0.002Developer Utilities
Life insurance needs calculator
DIME-style coverage estimate
POST /fin/life-insurance-needs-estimate$0.002Developer Utilities
Days to reach savings goal
fixed daily or weekly deposit calculator
POST /fin/piggy-bank-savings-goal-days$0.002Developer Utilities
Calculate blended interest rate across multiple loans
POST /fin/piggyback-loan-combined-rate$0.002Developer Utilities
Round-up savings calculator
total spare change from purchases
POST /fin/round-up-savings-calc$0.002Developer Utilities
Simplified take-home pay estimate
net from gross and withholdings
POST /fin/take-home-pay-estimate$0.002Developer Utilities
Marginal tax bracket lookup and progressive tax calculator
POST /fin/tax-bracket-marginal-lookup$0.002Developer Utilities
Classify a learning objective by Bloom's Taxonomy level
POST /edu/bloom-taxonomy-verb-classify$0.002Developer Utilities
Check citation format consistency
find style outliers
POST /edu/plagiarism-citation-style-check$0.002Developer Utilities
Select a report card comment template by subject and performance
POST /edu/report-card-comment-bank$0.002Developer Utilities
Calculate weighted semester grade from category scores
POST /edu/semester-grade-weighted$0.002Developer Utilities
Rank a vocabulary list by word frequency for teaching priority
POST /edu/vocabulary-list-frequency-rank$0.002Developer Utilities
Business name combinations generator
mix word fragments
POST /biz/business-name-combine$0.002Developer Utilities
Hybrid work schedule calculator
office and remote days
POST /biz/commute-days-hybrid-schedule$0.002Developer Utilities
Build a Competitor Feature Comparison Matrix
POST /biz/competitor-feature-matrix-build$0.002Developer Utilities
Fill content calendar posting slots from a weekly frequency
POST /biz/content-calendar-slot-fill$0.002Developer Utilities
Customer satisfaction (CSAT) score calculator
POST /biz/csat-score-calculate$0.002Developer Utilities
Elevator Pitch Length Checker
Estimate Speaking Time
POST /biz/elevator-pitch-length-check$0.002Developer Utilities
Calculate email list growth rate and gross signup rate
POST /biz/email-list-growth-rate$0.002Developer Utilities
Calculate Employee Net Promoter Score
eNPS calculator
POST /biz/employee-enps-calculate$0.002Developer Utilities
Job posting inclusive language checker
find exclusionary terms
POST /biz/job-posting-readability-check$0.002Developer Utilities
Meeting cost calculator by attendee salaries and duration
POST /biz/meeting-cost-estimate$0.002Developer Utilities
Meeting room double booking checker
find scheduling conflicts
POST /biz/meeting-room-double-booking-check$0.002Developer Utilities
Average podcast downloads per episode calculator
POST /biz/podcast-download-per-episode-avg$0.002Developer Utilities
Generate a press kit contents checklist
POST /biz/press-kit-checklist-build$0.002Developer Utilities
Allocate Presentation Time per Slide and Section
POST /biz/slide-deck-time-budget$0.002Developer Utilities
Software license seat utilization calculator
usage and available seats
POST /biz/software-license-seat-utilization$0.002