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About this tool
Practice single-handed keyboard layouts with typing exercises built for one hand.
The One-Handed Keyboard Trainer gives you short typing prompts to practise with a single hand, showing the key group that hand covers on a standard QWERTY board — Q W E R T · A S D F G · Z X C V B for the left, Y U I O P · H J K L · N M for the right — and scoring each attempt for accuracy and approximate words per minute. Accuracy is measured character by character against the prompt, so a mistyped letter shows up immediately rather than at the end. It is for people typing one-handed after an injury, with a limb difference, or while the other hand is occupied.
Open One-Handed Keyboard Trainer on AltFTool — it loads instantly in your browser.
Choose Left hand or Right hand in the 'Practice hand' select; the 'Suggested key group' panel shows Q W E R T · A S D F G · Z X C V B or Y U I O P · H J K L · N M.
Type the sentence shown into the box labelled 'Type the prompt here…' — timing starts on your first keystroke, and 'New prompt' loads the next sentence and clears the box.
Watch the Accuracy, Approx. WPM and Characters tiles update as you type; 'Prompt complete' appears once your text matches the prompt exactly.
Each hand selection lists the exact QWERTY keys that hand naturally reaches, so you learn a reach pattern rather than improvising.
Every typed character is compared with the same position in the prompt, so the accuracy percentage reflects real errors instead of only counting finished words.
Accuracy, approximate WPM and a characters-completed counter are shown side by side, and the prompts themselves are short sentences designed to be finished comfortably.
On a standard QWERTY layout the left hand covers Q W E R T, A S D F G and Z X C V B; the right hand covers Y U I O P, H J K L and N M. The trainer displays the group for whichever hand you select so you can practise reaching the far side of your half without looking down.
One-handed typing on a standard keyboard typically settles well below two-handed speed, so treat your own baseline from the first few prompts as the number to beat rather than a general benchmark. The trainer's WPM figure starts counting from your first keystroke and updates as you type.
It is the share of typed characters that match the prompt at the same position, expressed as a percentage. Because it is positional, a single dropped letter shifts everything after it and the score falls sharply — which is deliberate, since inserted or missing characters are the errors that cost the most time to fix.
Only if you will be typing one-handed long term. Layouts such as one-handed Dvorak can help permanent single-hand users but require relearning from scratch, so for a temporary injury it is usually faster to practise the standard layout — which is what these prompts and key groups are built around.