diff --git a/tools/perf/README.md b/tools/perf/README.md
index d77765628..a125cf61a 100644
--- a/tools/perf/README.md
+++ b/tools/perf/README.md
@@ -4,7 +4,7 @@ Perf testing
 Measure the performance impact of changes that you make to the fluent.js
 codebase.
 
-Execution time is reported in microseconds (μs).
+Execution time is reported in milliseconds (ms).
 
 The script measures the speed of parsing, compilation and getting all entities
 from a resource file based on Firefox OS's [Settings localization file][].  The
@@ -65,7 +65,7 @@ significant, it will be show in green (faster) or red (slower).
 High Resolution Timer (HRT)
 ---------------------------
 
-All numbers are reported in microseconds (μs) via node's 
+All numbers are reported in millisecods (ms) via node's 
 [process.hrtime][] or SpiderMonkey shell's [dateNow][].  This allows to 
 measure the time of a single operation.  
 
diff --git a/tools/perf/benchmark.d8.js b/tools/perf/benchmark.d8.js
index 395858ddc..6010eb857 100644
--- a/tools/perf/benchmark.d8.js
+++ b/tools/perf/benchmark.d8.js
@@ -4,9 +4,9 @@ load('../../fluent-syntax/fluent-syntax.js');
 var ftlCode = read('./workload-low.ftl');
 var args = {}
 
-function micro(time) {
-  // time is in milliseconds
-  return Math.round(time * 1000);
+function ms(time) {
+  // time is in milliseconds with decimals
+  return Math.round(time * 1e3) / 1e3;
 }
 
 var times = {};
@@ -34,9 +34,9 @@ for (const [id, message] of ctx.messages) {
 times.formatEnd = Date.now();
 
 var results = {
-  parseFTL: micro(times.ftlParseEnd - times.ftlParseStart),
-  parseFTLEntries: micro(times.ftlEntriesParseEnd - times.ftlEntriesParseStart),
-  format: micro(times.formatEnd - times.format),
+  "parse full AST (ms)": ms(times.ftlParseEnd - times.ftlParseStart),
+  "parse runtime AST (ms)": ms(times.ftlEntriesParseEnd - times.ftlEntriesParseStart),
+  "format (ms)": ms(times.formatEnd - times.format),
 };
 
 print(JSON.stringify(results));
diff --git a/tools/perf/benchmark.jsshell.js b/tools/perf/benchmark.jsshell.js
index c5a421731..5b05f7f09 100644
--- a/tools/perf/benchmark.jsshell.js
+++ b/tools/perf/benchmark.jsshell.js
@@ -4,9 +4,9 @@ load('../../fluent-syntax/fluent-syntax.js');
 var ftlCode = read('./workload-low.ftl');
 var args = {};
 
-function micro(time) {
+function ms(time) {
   // time is in milliseconds with decimals
-  return Math.round(time * 1000);
+  return Math.round(time * 1e3) / 1e3;
 }
 
 var times = {};
@@ -34,9 +34,9 @@ for (const [id, message] of ctx.messages) {
 times.formatEnd = dateNow();
 
 var results = {
-  parseFTL: micro(times.ftlParseEnd - times.ftlParseStart),
-  parseFTLEntries: micro(times.ftlEntriesParseEnd - times.ftlEntriesParseStart),
-  format: micro(times.formatEnd - times.format),
+  "parse full AST (ms)": ms(times.ftlParseEnd - times.ftlParseStart),
+  "parse runtime AST (ms)": ms(times.ftlEntriesParseEnd - times.ftlEntriesParseStart),
+  "format (ms)": ms(times.formatEnd - times.format),
 };
 
 print(JSON.stringify(results));
diff --git a/tools/perf/benchmark.node.js b/tools/perf/benchmark.node.js
index 623dd43c3..6cca05b96 100644
--- a/tools/perf/benchmark.node.js
+++ b/tools/perf/benchmark.node.js
@@ -8,9 +8,8 @@ var ftlCode = fs.readFileSync(__dirname + '/workload-low.ftl').toString();
 
 var args = {};
 
-function micro(time) {
-  // time is [seconds, nanoseconds]
-  return Math.round((time[0] * 1e9 + time[1]) / 1000);
+function ms([seconds, nanoseconds]) {
+  return Math.round((seconds * 1e9 + nanoseconds) / 1e3) / 1e3;
 }
 
 var cumulative = {};
@@ -39,8 +38,8 @@ for (const [id, message] of ctx.messages) {
 cumulative.formatEnd = process.hrtime(start);
 
 var results = {
-  parseFTL: micro(cumulative.ftlParseEnd) - micro(cumulative.ftlParseStart),
-  parseFTLEntries: micro(cumulative.ftlEntriesParseEnd) - micro(cumulative.ftlEntriesParseStart),
-  format: micro(cumulative.formatEnd) - micro(cumulative.format),
+  "parse full AST (ms)": ms(cumulative.ftlParseEnd) - ms(cumulative.ftlParseStart),
+  "parse runtime AST (ms)": ms(cumulative.ftlEntriesParseEnd) - ms(cumulative.ftlEntriesParseStart),
+  "format (ms)": ms(cumulative.formatEnd) - ms(cumulative.format),
 };
 console.log(JSON.stringify(results));