Play the songs you love,
one chord at a time
Tune up, find any chord, change a song's key and practise in time — all in your browser. Plus friendly, in-depth guides that take you from your first chord to your first song.
Guitar tools
All tools →Every tool runs on your device. No sign-up, no downloads, nothing uploaded.
Guitar Tuner
Tune with your microphone or by ear. Standard, drop D, open tunings, ukulele and bass.
Chord Transposer
Paste a song with chords and move it to any key, keeping chords lined up above the lyrics.
Capo Calculator
Turn hard chords like Bb, Eb and F into easy open shapes by finding the best capo fret.
Guitar Chord Finder
Chord diagrams for any chord in any key, with the notes and intervals explained.
Metronome
Sample-accurate click from 30–260 BPM with accents, subdivisions and tap tempo.
Tap Tempo (BPM Counter)
Tap along with any song to get its BPM, plus delay times for your effects pedal.
Song Key Finder
Type a song's chords to find its key and see the progression as Roman numerals.
Guitar Scale Finder
Major, minor, pentatonic, blues and modes in any key, mapped across the whole fretboard.
New to guitar? Start here
All guides →Follow these in order. Each one builds on the last, and each links to the tool you need to practise it.
How to tune a guitar
A complete guide to tuning a guitar: standard tuning notes, using an electronic or online tuner, the fifth-fret method by ear, keeping strings in tune and popular alternate tunings.
Your first 8 chords
Learn the eight open chords that unlock thousands of songs: E minor, A minor, C, G, D, E, A and D minor.
Strumming patterns
Learn to strum in time with six beginner strumming patterns, how to count eighth notes, the constant-motion technique and how to strum songs in 3/4 and 6/8.
Reading chord charts
Understand chord diagrams, chord sheets with lyrics, slash chords, repeat signs and guitar tab, so you can play any song you find online.
Daily practice routine
A realistic 20-minute daily guitar practice plan for beginners and returning players: warm-up, chord changes, rhythm, a song and a little theory, plus how to track progress.
Chord progressions
Learn why some chords sound good together, how Roman numerals describe progressions in any key, and the seven most common progressions in popular music with examples.
Why Strumfy?
Built by a player
Strumfy started as a personal songbook. Every tool here solves a problem I had while learning songs, from awkward keys to a guitar that wouldn't stay in tune.
Theory without the jargon
Guides explain the why in plain language, with chord diagrams and real progressions — enough theory to help, never enough to get in the way.
Private by design
The tuner listens through your microphone, but audio is analysed in your browser and never leaves your device. Tools don't need an account.
Works everywhere
Phone on a music stand, laptop on the desk or tablet on the sofa — every page is designed for small screens first.
Latest guides
See all 13 →Understanding Rhythm and Time Signatures on Guitar
A friendly explanation of beats, bars, note values and time signatures (4/4, 3/4, 6/8, 12/8), with counting systems and exercises to improve your timing on guitar.
Sore Fingertips From Guitar? What’s Normal and How to Build Calluses
Why guitar makes your fingertips sore, how long it lasts, how calluses form, and practical ways to practise comfortably — including string choice, action and session length.
A 20-Minute Daily Guitar Practice Routine for Beginners
A realistic 20-minute daily guitar practice plan for beginners and returning players: warm-up, chord changes, rhythm, a song and a little theory, plus how to track progress.
Major and Minor Scales Explained for Guitarists
Understand the major and natural minor scales, the pattern of whole and half steps, how scales create chords, the pentatonic scales and how to practise scales musically.
How to Find the Key of a Song (By Ear and From Chords)
Practical methods to work out what key a song is in: from its chords, from the last chord, by humming the home note, and using the bass. Includes major vs minor and relative keys.
Barre Chords for Beginners: How to Finally Play F and Bm
A patient, practical guide to barre chords: E-shape and A-shape barres, how to get every string to ring, exercises to build strength, and how to move one shape to every key.
About these tools and guides
Strumfy is a free resource for people learning to play guitar and accompany songs. The tools cover the jobs that come up every practice session: tuning, finding a chord shape, moving a song to a better key with the transposer or a capo, working out what key a song is in, seeing scales on the fretboard and keeping time with a metronome.
The guides are written for adults who are starting out or coming back to the guitar after a break. They focus on what actually makes the difference in the first months — clean chord changes, steady rhythm and understanding how songs are put together — rather than exercises for their own sake.