Change Audio Speed

Speed up or slow down an audio file, 0.5× to 2× — in your browser.

Chagua faili la sauti

Speed up or slow down an audio file — 0.5× to 2×. Pitch changes with speed. Runs in your browser.

Bofya kuchagua, au dondosha faili hapa

Jinsi ya Change Audio Speed

1
Add your audio
Drop in the file.
2
Set the speed
0.5× to 2×. "Keep pitch" is on by default; untick it for the pitch-shift (nightcore) effect.
3
Apply and download
Click Change speed and save the result.

Related PDF tools

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Change Audio Speed — maswali yanayoulizwa mara kwa mara

Does the pitch change?+

Not by default. "Keep pitch" is on, which time-stretches the audio so a voice stays natural at any speed. Untick it to resample instead — then pitch moves with speed (the nightcore / slowed effect).

How far can I go?+

0.5× to 2×.

Is my file uploaded?+

No. It's processed entirely in your browser.

Why does "Keep pitch" sound slightly warbly?+

Time-stretching rearranges short overlapping grains of audio, which adds mild artefacts — usually fine on speech, more noticeable on busy music. Untick it for an artefact-free result with a pitch shift.

Je, mnapakia faili zangu kwenye seva?+

Hapana — kila zana hapa inachakata faili zako kikamilifu kwenye kifaa chako, na hakuna kinachopakiwa kwenye seva. Tofauti pekee ni zana za AI, ambazo hutuma maandishi yaliyotolewa (si faili) kwa Claude ili kufanya kazi yake.

Je, kuna kikomo cha ukubwa wa faili?+

Hatuweki kikomo cha bandia, lakini kwa kuwa uchakataji hufanyika kwenye kivinjari chako, faili kubwa sana (zaidi ya 500MB au kurasa 1,000+) hupunguzwa na kumbukumbu ya kifaa chako, si sisi.