Skip to content

Keyword · US · updated 2026-06-28

21 minus 13

Monthly searches
110
CPC
$0.00
Competition
0

Also searched

Monthly average for US, from the Google Ads API: the same numbers you'd see in Google Ads.

Get this inside your AI assistant

Connect seodata.dev over MCP and Claude, ChatGPT or Muse can look up any keyword while they work. Ask in plain language, get these numbers back.

https://mcp.seodata.dev/mcp

20 free lookups a day, no account needed.

Related keywords

Keywords with overlapping search results. Similar volume and high overlap means the same search intent, so you can target either.

Keyword Volume CPC Overlap
subtraction calculator 1,300 $1.33 9/20
30 minus 13 140 $0.00 7/20
27 minus 13 110 $0.00 8/20
31 minus 13 110 $0.00 8/20
36 minus 19 110 $0.00 7/20
40 minus 13 90 $0.00 8/20
35 minus 19 90 $0.00 7/20
37 minus 19 90 $0.00 7/20
37 minus 13 50 $0.00 8/20
33 minus 13 40 $0.00 8/20
For AI agents: query this keyword over HTTP
$ curl "https://api.seodata.dev/v1/keyword?q=21+minus+13&country=us" Returns: volume, cpc, competition Country: &country=us (50+ supported, 2-letter ISO) Auth: none for 20/day, register for 500/month, $4.99/mo unlimited

Full API spec: llms.txt · lookup_keyword over MCP